/* 
 * Copyright (c) 2016 Lammert Bies
 * Copyright (c) 2013-2016 the Civetweb developers
 * Copyright (c) 2004-2013 Sergey Lyubka
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ============
 * Release: 2.0
 */

#include "httplib_main.h"

/*
 * void XX_httplib_construct_etag( struct lh_ctx_t *ctx, char *buf, size_t buf_len, const struct file *filep );
 *
 * The function XX_httplib_construct_etag() is used to construct an etag which
 * can be used to identify a file on a specific moment.
 */

void XX_httplib_construct_etag( struct lh_ctx_t *ctx, char *buf, size_t buf_len, const struct file *filep ) {

	if ( filep != NULL  &&  buf != NULL  &&  buf_len > 0 ) {

		XX_httplib_snprintf( ctx, NULL, NULL, buf, buf_len, "\"%lx.%" INT64_FMT "\"", (unsigned long)filep->last_modified, filep->size );
	}

}  /* XX_httplib_construct_etag */
